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How to use: Rebar Weight Calculator
- Choose the bar size (metric mm or US # size).
- Enter the length of one bar and how many pieces.
- Read the total weight in kg, lb and tons.
Formula
Weight per metre (kg) = d² ÷ 162.28, where d is the bar diameter in mm. Total = weight/m × length × quantity.
Rebar Weight Calculator — FAQ
What is the weight of a 12mm rebar?
A 12 mm bar weighs 12² ÷ 162.28 ≈ 0.888 kg per metre.
How do you calculate the weight of steel rebar?
Square the diameter in mm, divide by 162.28 to get kg/m, then multiply by length and quantity.